2x-(x-1)/2=2-(x-2)/3
两边同乘6
12x-3(x-1)=12-2(x-2)
12x-3x+3=12-2x+4
9x+3=16-2x
11x=13
x=13/11
将x=13/11代入kx-7=0,有
k*13/11-7=0
13k=77
k=77/13
2x-(x-1)/2=2-(x-2)/3
两边同乘6
12x-3(x-1)=12-2(x-2)
12x-3x+3=12-2x+4
9x+3=16-2x
11x=13
x=13/11
将x=13/11代入kx-7=0,有
k*13/11-7=0
13k=77
k=77/13